| 03 39 23 |
No. 360 |
 |
|
DESCRIPTION
DECRA-SEAL is a non-yellowing, acrylic-based,
high solids, liquid curing and sealing compound for
decorative concrete. The product is clear,
transparent and easy to apply. DECRA-SEAL
also offers improved resistance to water, alkalis,
mild acids, and petroleum spirits. The product
has been formulated to seal and protect decorative
colored concrete by producing a hard yet flexible,
clear film. This product is specifically formulated
for the decorative concrete market.
USES
DECRA-SEAL is designed for various
applications, including exterior concrete surfaces,
driveways, patios, swimming pool areas, exposed
aggregate, as well as any exterior surface where
protection and sealing of concrete is desired. The
use of DECRA-SEAL on any exterior concrete
surface provides a durable, long-lasting, high-sheen
finish that offers improved resistance to
chemicals, oil, grease, deicing salts, and
abrasions.
| FEATURES/BENEFITS |
|
PACKAGING
1 Gallon (3.79 L) Cans (6 per carton)
5 Gallon (18.93 L) Pails
| SPECIFICATIONS |
|
COVERAGE*
300 - 600 ft.²/gal. (7.37 - 14.73 m²/L)
*Coverage may vary due to
porosity and condition of the concrete.
| TECHNICAL DATA** The following results were obtained under laboratory conditions: |
|
| Drying Time @ 73º F, 50% RH | 1-2 hours*** |
| Re-coat | 2-24 hours |
| Foot Traffic | 4-6 hours |
| Wheel Traffic | 6-12 hours |
| VOC Content | 679 g/L |
| Adhesion to Concrete | Excellent |
|
Ultraviolet light (UV) degradation Ultraviolet Resistance |
Non-yellowing No chalking No deterioration |
| Alkali Resistance | Excellent |
|
**All technical data is typical information, but may vary due
to test methods, conditions and operators. *** Low concrete or air temperatures and/or high relative humidity will extend drying times. |
|
APPLICATION
Surface Preparation …Existing (Old) Concrete: Concrete surface
must be clean and dry with all stains, oil, grease, form release
agents, dust, and dirt removed prior to application. ULTRITE®
DEGREASER from W. R. MEADOWS is recommended for
cleaning. New Concrete: DECRA-SEAL should be applied when
surface water has completely disappeared and the concrete surface
will not be marred by walking workmen. New Stamped Concrete:
Surface must be clean and free from all powdered release agent
residue.
Application Method ... Sprayer Application: Use a low pressure, high solids commercial-grade sprayer with Viton-equipped fittings. (Do not use garden sprayers or form oil sprayers.) The sprayer must be clean and dry prior to application. Follow the instructions provided by the sprayer manufacturer. W. R. MEADOWS recommends the Chapin Xtreme industrial sprayer model #19049 fitted with either the 5941 (0.5 gpm) or the 5943 (1.0 gpm) nozzle. Always apply a test area prior to full application using proper spray techniques and coverage rates. If spraying and back rolling, the optimum results are achieved if a second person can immediately back roll, following behind the spray applicator. Follow roller instructions below. Do not delay the back roll, as the area will dry quickly. If puddles occur, immediately brush or roll them out.
Roller Application: Use a short-nap (1/4” is ideal) mohair roller.
To ensure proper film formation, the following steps should be
followed carefully.
• Maintain a wet edge while applying.
• Do not apply thick films.
• Do not roll or brush excessively, as this will cause the film to
become stringy.
• Do not roll or brush once material becomes tacky.
• Do not roll over dried material.
• Do not allow roller to become dry.
Note: Over-rolling or using incorrect rollers may cause bubbles to form in the film. If this occurs, a light application of xylene, rolled over the film, should eliminate the problem.
For optimum performance, apply first coat at 600 ft.²/gal. After the first coat has thoroughly dried, apply a second coat at 600 ft.²/gal. NOTE: The second coat should be applied at a right angle.
Drying Time…DECRA-SEAL dries quickly. Drying times may be extended, depending on application rate, temperature, humidity, and project conditions. Restrict foot traffic for at least four hours. Twelve hours is preferred.
Cleanup… Application equipment should be cleaned promptly after use with xylene or toluene.
PRECAUTIONS
DO NOT DILUTE. FOR EXTERIOR APPLICATION ONLY. Direct sunlight, combined with high temperatures, may cause
rapid evaporation that will not allow the film to form properly.
Under these conditions, the film may peel, bubble and/or turn
white (blush). DECRA-SEAL should not be applied to concrete
exposed to excessive moisture. Entrapped moisture in a solvent-based
sealer may cause the film to peel and/or turn white (blush).
Do not apply DECRA-SEAL if the temperature of the concrete or air is below 40° F (4° C). DECRA-SEAL is designed for colored concrete, but mottling may occur. Do not use on dense or non-porous surfaces, i.e. brick, stone, etc.
Concrete containing calcium chloride will remain dark longer when treated with DECRA-SEAL. The specifier and user shall determine the suitability of product for specific applications and assume all responsibility in connection therewith.
DECRA-SEAL is a membrane-forming sealer. All membrane-forming sealers may darken concrete or magnify imperfections caused by variations in the porosity and/or finishing of the concrete.
HEALTH AND SAFETY
Avoid direct contact with this product, as it may cause irritation
of the eyes and/or skin. Inhalation of vapors may result in
transient central nervous system depression. DECRA-SEAL is
combustible. (Flash point: 105° F.) DECRA-SEAL should not
be utilized in locations where food items are present. Refer to Material
Safety Data Sheet for health and safety information.
SHELF LIFE (TYPICAL)
One year in original, unopened container.
This material last updated May 2008.
